Not that it really matters, with the current Supreme Court being what it is, but still...
Not that it really matters, with the current Supreme Court being what it is, but still...
It's one of those weird things in the US constitution which allow for congress to create new federal courts which don't ultimately fall under the jurisdiction of the regular federal courts.
A secret criminal prosecution trial would be unconstitutional under the Sixth Amendment ("In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial"). Though SCOTUS has unfortunately allowed for some classified material to be kept secret, sometimes (IIRC) even from the defendant and the jury, though usually this is ancillary stuff, not the direct evidence that would secure a conviction.
Normal judicial warrants are public record.